package collection;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
//集合转数组
public class CollectionToArray {
    public static void main(String[] args) {
        Collection<String> c=new ArrayList<>();
        c.add("one");
        c.add("two");
        c.add("three");
        c.add("four");
        c.add("five");
        System.out.println(c);

        //若参数数组元素个数==集合元素个数,那正常转;
        //若参数数组元素个数<=集合元素个数,那正常转(按照集合大小给数组)
        //若参数数组元素个数>=集合元素个数,那正常转(在末尾补默认值)
        String[] array=c.toArray(new String[3]);
        System.out.println(Arrays.toString(array));




    }
}
